Protoperidinium pyriforme Balech 1974

• Main Authors: Krakhmalnyi, Aleksandr F., Krakhmalnyi, Maxim A., Terenko, Galyna V., Goncharenko, Igor V.
• Format: Other/Unknown Material
• Language: unknown
• Published: 2023
• Subjects: Biodiversity; Taxonomy; Chromista; Myzozoa; Dinophyceae; Peridiniales; Protoperidiniaceae; Protoperidinium; Protoperidinium pyriforme; Norwegian Sea; Bering Sea; Okhotsk; Greenland; Pacific; Indian; Konovalova; Greenland Sea; okhotsk sea
• Online Access: https://zenodo.org/record/8315264; https://doi.org/10.5281/zenodo.8315264

Protoperidinium pyriforme (Paulsen) Balech 1974. Hydrobiolog. 4 (1): 63. (Figs. 56–57). References: Lebour 1925: 126, Fig. 38; Schiller 1937: 194, Fig. 191 a–n; Kiselew 1950: 183, Fig. a–b, 309 a–b; Wood 1968: 107, Fig. 322 (as Peridinium pyriforme); Balech 1988: 93, Lam. 31, Figs. 16–19; Dodge 1982: 198, Fig. 23 F, G; Konovalova & Selina 2010: 150, Table XX, 7 a–g; Krakhmalnyi 2011: 206, Table 89, 1–13. Basionym: Peridinium steinii var. pyriformis Paulsen 1905. Medd. Hav. Kbhvn. Ser. Plankton 1 (3): 1–21, D, Figs. c, d, e. Description: Cells pyriform, oval in cross section. The epitheca with a short apical protrusion. The epithecal plate pattern comprises seven precingular plates (7ʹʹ), four apical plates (4ʹ), three anterior intercalary plates (3a), 1ʹ plate – “meta”, 2a – “penta”. The cingulum median, slightly ascending, bordered. The sulcus straight, broad, shallow, reaches the antapex. Thecal plates finely reticulated. The hypotheca hemispherical, with two small closely spaced antapical spines. Dimensions: 33.0–66.0 μm long and 32.0–60.0 μm wide. Distribution: Atlantic, Pacific and possibly Indian Oceans; Greenland Sea, North Sea, Norwegian Sea, Black Sea, Bering Sea, Sea of Okhotsk, Sea of Japan (Krakhmalnyi 2011). Data on the distribution of P. pyriforme are given from the GBIF.org (2022) (Fig. 94). Published as part of Krakhmalnyi, Aleksandr F., Krakhmalnyi, Maxim A., Terenko, Galyna V. & Goncharenko, Igor V., 2023, Dominant Species Of The Genus Protoperidinium Bergh (Peridiniales: Protoperidiniaceae) In The Black Sea, pp. 427-448 in Zootaxa 5339 (5) on page 441, DOI:10.11646/zootaxa.5339.5.2, http://zenodo.org/record/8309419